分组交换的技术经济分析

本文按照我国的情况对同轴电缆干线网、光纤干线网、数字微波干线网、卫星网分别使用分组交换和电路交换时的综合造价进行了计算,得出了绝大多数情况下分组交换比电路交换便宜的结论。本文还讨论了我国模拟通信网向数字通信网过渡的策略问题。

Packet Switching Economics Analysis

According to the China's circumstances, this paper calculates respectively the synthetical costs of both packet switching backbone network and circuit switching backbone network using coaxial-cable, optic fibre, digital microwave or satellite and concludes that packet switching is cheaper than circuit switching in most circumstances. The paper also discusses the developing strategy from analogue network to digital network.